221444255224445 has 32 divisors (see below), whose sum is σ = 302999603558400. Its totient is φ = 153791001432640.

The previous prime is 221444255224433. The next prime is 221444255224459. The reversal of 221444255224445 is 544422552444122.

It is a happy number.

It is not a de Polignac number, because 221444255224445 - 2⁴⁰ = 220344743596669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221444255224393 and 221444255224402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145364759 + ... + 146880228.

It is an arithmetic number, because the mean of its divisors is an integer number (9468737611200).

Almost surely, 2^{221444255224445} is an apocalyptic number.

It is an amenable number.

221444255224445 is a deficient number, since it is larger than the sum of its proper divisors (81555348333955).

221444255224445 is a wasteful number, since it uses less digits than its factorization.

221444255224445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292245625.

The product of its digits is 16384000, while the sum is 50.

The spelling of 221444255224445 in words is "two hundred twenty-one trillion, four hundred forty-four billion, two hundred fifty-five million, two hundred twenty-four thousand, four hundred forty-five".